摘要:
An engine has an ignition source in a combustion chamber of the engine. An inner housing is provided that includes one or more jet apertures and defines an inner chamber containing the ignition source. An outer housing (or pre-chamber) is provided that includes one or more jet apertures in communication with the main combustion chamber and defines an outer chamber containing the inner housing.
摘要:
An engine includes a main combustion chamber; an intake duct configured to provide a lean fuel-oxidizer mixture to the main combustion chamber; a pre-chamber in fluid communication with the main combustion chamber, the pre-chamber including an ignition energy source operatively coupled to the pre-chamber, and a heating element in thermal communication with the pre-chamber; and a controller operatively coupled to the ignition energy source and the heating element. The controller is configured to initiate combustion of the lean fuel-oxidizer mixture in the main combustion chamber by activating the ignition energy source, and heat fuel and oxidizer in the pre-chamber via the heating element to a temperature sufficient to produce hydrogen peroxide (H2O2) in the pre-chamber.
摘要:
An ignition system of an internal combustion engine, of a motor vehicle in particular, having at least one device for igniting a jet of a fuel/air mixture which has a chamber enclosing a process space in which the ignition of the fuel/air mixture takes place. The chamber has a device for enriching the process space with oxygen radicals.
摘要:
A glow member, preferably in the shape of a ring, assists ignition and combustion of a fuel used in an internal combustion engine. A fuel injection valve injects a plurality of fuel jets directly into a combustion chamber during operation of the engine so that the fuel jets are aimed to the proximity of the glow member such that ignition of fuel in each fuel jet is assisted by the glow member. The glow member is made from high temperature materials and can include catalytic materials to further promote combustion. The glow member can be actively heated, for example by an electric current, in addition to being passively heated by the heat generated within the combustion chamber by the combustion of the fuel therein.
摘要:
A premixed charge compression ignition engine, and a control system, is provided which effectively initiates combustion by compression ignition and maintains stable combustion while achieving extremely low oxides of nitrogen emissions, good overall efficiency and acceptable combustion noise and cylinder pressures. The present engine and control system effectively controls the combustion history, that is, the time at which combustion occurs, the rate of combustion, the duration of combustion and/or the completeness of combustion, by controlling the operation of certain control variables providing temperature control, pressure control, control of the mixture's autoignition properties and equivalence ratio control. The combustion control system provides active feedback control of the combustion event and includes a sensor, e.g. pressure sensor, for detecting an engine operating condition indicative of the combustion history, e.g. the start of combustion, and generating an associated engine operating condition signal. A processor receives the signal and generates control signals based on the engine operating condition signal for controlling various engine components to control the temperature, pressure, equivalence ratio and\or autoignition properties so as to variably control the combustion history of future combustion events to achieve stable, low emission combustion in each cylinder and combustion balancing between the cylinders.
摘要:
A method and apparatus for operating an internal combustion engine in which in the event of erroneous fuel injection, combustion is maintained following the expansion stroke via a constantly hot spot in the combustion chamber, in such a way that erroneously introduced fuel is combusted, by reducing the oxygen content in the combustion chamber, such that no later than by the end of the compression stroke of the engine, a possible conversion of existing fuel and existing oxygen can no longer occur to any substantial extent, because of the heating of the contents of the combustion chamber toward the end of the compression stroke, thus preventing this malfunction from destroying the engine.
摘要:
A ceramic electric resistor is proposed which can be made by means of ceramizing at least one organo-silicon polymer and at least one filler. The filler comprises at least one high-melting electrically conductive component, with the filler portion amounting to 20 to 50 vol. % relative to the solvent-free polymer-filler mixture. The specific electrical resistance can be set by varying the filler portion. The ceramic electric resistor is particularly suited as heating conductor for pencil-type glow plugs.
摘要:
An electrically heated heating member (13) is arranged in a cavity formed in the top surface of the piston (2) and fuel is injected from the nozzle (9) of the fuel injector (8) toward the heating surface (15) of the heating member (13) in the form of a continuous fluid stream. This injected fuel strikes the heating surface (15) in the form of a continuous fluid stream and receives heat from the heating surface (15) to atomize and simultaneously disperses inside the cavity (7). Next, the atomized fuel is self-ignited.